Clamp for holding piston-rings when removing pistons.



H. W McCLELLAN 61. 0. W. HANSON, In. CLAMP FOR HOLDING PISTON RINGS WHEN REMOVING PISTONS.

'APPL ICATION FILED OCT- 15, I914.

Patented Aug. 13, 1918.

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GLAMIB s-0a nonnme Heron-runes WHEN REMOVING PISTONS.

Specification of Letters Patent.

Patented Aug. 13, 1918.

Application flled octobe r 16,1914. Serial No. 868,958.

To all whom it may concern:

Be it known that we, HARRY W. MOCLEL- LAN and OsoAR W. HANsoN, Jr., citizens of the United States, residing at Altoona, 1n the county of Blair and State of Pennsylvania, have invented a new and useful Clamp for Holding Piston-Rings when Removmg Pistons; and we do hereby declare the following to be a full ,"clear, and exact descrip tion of the invention, such as will enable others'skilled in the art to which it appertains to make and use the same.

This invention relates to a clamp for holding piston rings on the piston while removino the same.

lost in holding the rings in place when reinserting the piston in the cylinder, therefore the object of the present invention is to provide a clamp designed to surround the piston as it is removed, to hold the rings securely in place, especiall while the plston is undergoing repairs an the l1ke.

Another object of the invention 1s to protect the piston rings from becomin corroded, and in cases where a clamp cou d not be secured on account of the piston sleeve being bent over, this clamp will ellminate this defect.

Another object of the invention is the pro vision of a clamp having overlapping ends provided with slot and bolt connections, thereb rendering the clamp adjustable, so

t pistons of different s zes.

Another object of the inventlon is the provision of means on the clamp, whichcontact with the peripheral edge of the cyllnder or the non-pressure head, so as to prevent the cylinder or non-pressure head from slipping over the clamp.

In practical fields, the details of construction may necessitate alterations, falling within the scope of what is claimed.

The invention comprises further features and combination of parts, as hereinafter set forth, shown in the drawings and claimed.

In the drawings I I Figure l is a view in perspectlve showing the end of a cylinder, t e piston in the act of being removed and the clamp just partially slipped on the piston, the lugs thereof en aging the peripheral edgeof the-cylinder.

Fig. 2 is a longitudinal sectional view on line 2-2 ofFig. 1.

Fig. 3 is a perspective view of the piston entirely removed and the clam thereon to prevent the piston rings from isplacement.

Fig. 4 is a detail view of the clamp.

Fig. 5 is a sectional view through the clamp as applied to a piston, showing the head ofthe bolt countersunken in the underlapping part of the clamp.

Fig. 6 is a sectional view, parts in elevation, showing the band on a piston rod of a pressure cylinder, to prevent the non-pres sure head 4 from slipping over the band.

Referring more particularly to the drawings, l designates a metallic band having its ends overlapping to form the clamp. The overlapping ends 2 and 3 are rovided with registering elongated slots 4;, t rough which a bolt 5 extends, as shown in Figs. 4: and 5. However, in Figs. 1 to 3 the overlapping end 3 is provided within an elongated slot, and the screw-threaded bolt 5 forms an integral part of the underlapping end 2, said integral threaded bolt passing through the elongated slot 4 of the overlapping end 3,

provided with a nut, for clamping the overlapping ends together in adjusted positions. By the provision of said slots or slot the clamp may be used upon pistons of diflerent sizes. A cotter pin 7 passes through an aperture in the bolt, to prevent the nut from being entirely removed from the bolt. It will be observed that the extreme ends of the overlapping parts or ends 2 and 3 have round or curved edges, as shown at 8, and also said overlapping ends or portions taper in thickness, as shown, thereby enabling the clamp to neatly fit the piston.

In Figs. 4 and 5 it will be observed that the head of the bolt is extremely flat, and is countersunken in a recess 10 of the underlapping part of the band, so that the clamp wlll neatly fit the piston, and avoid the head of the bolt from acting as an obstruction.

One edge of the clamp is provided with integral laterally extending lugs 11, which engage the peripheral edge of the cylinder 12, that is, when the head of the cylinder is removed, so as to prevent the c linder from slipping over the clamp, as s own in the drawings.

When the piston 13 is removed and the clamp applied, the same acts to revent the piston rings from expanding an becoming detached, and at the same time prevent corrosion of the rings while the piston is under repairs. When inserting the piston said lugs are disposed in contact with the peripheral edge oft-he eylinder, end'the "band or amp is s f htly leosexied to .a d es: hardly perceptl le to the 'na ed eye, en the piston is readily inserted Without the rings expanding or preventing the movement of the piston as it enters the e linder,

The invention having been set for h,'vvh at is claimed as new and seful is 1. A device as set forth comprising a metallic strap bent to form an annular, hand, one end overleppingthe Other, one of said en s ha ng an elongated $1 -1 t eth end carrying a bolt passing. throughsaid slot and provided with a nut to adflustebl'y eonnect said overlapfping ends, one of the ,pe ripheral edges 0 the band having a plurality of integral lugs, extending laterally and designed to lie in the path of and engage the end of a non-pressure head of a pressure cylinder, to prevent said non-pres sure head from slipping over said band.

2. An article of manufacture as set forth, comprising a metallic strap bent to form an .enele annular band, one end overlapping the other, both ends being tapered whereb said endsmay overlap, oneef said ends having etedslet bel eerri .d y the other an passing rough sai slot, the head of the bolt being countersunk in the inner faee o f said other end, means to be edjilstab? set up on said bolt to adjustably' eonnec said overlapping ends, a plurality of lugs integrally conn cted 430 one of the p ph al he ves er the ban ai .1 lugs e te'e t ,yend d pted to in. the p thief-e vengage the end of a non-pressig g head o a pressu e ylinder to preve ,npressnre head from slrppmg Over sand hen.

In testimony wher f wve h e gned our names ,te p cification in the presence of two subserihlng w tnesses.

HARRY W. MoOIiELLAN. OSCAR W. HANSON. JR.

Witnesses:

CALVIN B. BILLING, J. L.

Copies of this patent may be obtained for five cents eaeh, by addressing the "flemmhglgmer of P41501113, Welmns on. 

